Dyax (DYAX)

Several of our Named Executive Officers' compensation and other arrangements are set forth in employment letters provided to them when
they joined us or were promoted to their current positions. Since the date of their respective employment letters, the compensation paid to each executive has been increased and additional
compensation has been awarded. In addition, we have approved a standard form of agreement for each of our executive
officers other than our Chief Executive Officer to provide them benefits in the event of termination without cause or resignation for good reason within twelve months after a change in control of our
company.

Several of our executives' compensation and other arrangements are set forth in employment letters provided to them when they joined us or were promoted to their
current positions. Since the date of their respective employment letters, the compensation paid to each executive has been increased and additional compensation has been awarded. In addition, we have
approved a standard form of agreement for each of our executive officers other than our Chief Executive Officer to provide them benefits in the event of termination without cause or resignation for
good reason within twelve months after a change in control of our company.

We do not have formal
employment agreements with any of our executive officers; however, several of
our executives compensation and other arrangements are set forth in employment
letters provided to them when they joined us or were promoted to their current
position. Since the date of their respective employment letters, the
compensation paid to each of these executives has been increased and additional
compensation has been awarded.